Window-glass channel



Oct. 23, 1928.

E. W. M. BAILEY WINDOW GLASS CHANNEL Filed June 30, 1927 I I r v r r 4 I1 I I I 1 1 r I I l/ l I I/ 1 1 i r/ a 1 1 1 1 1 4 z I I l r/ I a I. Z aa b Patented Oct. 23, 1928.

EDWIN W. INL BAILEY, 0F AMESBURY, MASSACHUSETTS.

WIN DOW-GLASS CHANNEL.

Application filed June 30,

This invention relates to that class of win-- dow glass channels whichare primarily designed to receive the edge portion of the window glassin closed body automobiles and which comprise a sheet metal strip bentin channel form and arranged in a groove formed to receive the same inthe window casing.

It is common practice, in the manufacture of metal automobile bodies, toform the channel receiving grooves so that the sides thereof are fixed,thereby making it necessary to place the channel strip in the-groove andsecure it in position by some suitable means. While this maybeaccomplished by means of bolts passed through the bottom of thechannel into the'casing, or by an adhesive, yet either of these meansare objectionable, the first because it is too expensive and the secondbecause it is insecure. Moreover, when the channel is felt lined, asshown for example in my prior Patent 1,521,168, the difliculty inattempting to secure the channel by bolts passing through its baseportion is considerably increased.

The object of this invention is to provide a metal channel of the typeabove referred to with means whereby the same will become securelylocked in position in a metal sided groove by theract of forcing ittherein and without substantial increase in the manufacturing cost ofthe channel( I accomplish this object b providing the' channel'stripwith a series 0 oppositely disposed tongues which are formed with thechannel and are arranged topermit the channel to be forced into thecasing groove and prevent its removal. I

For a more complete description of the invention, reference is made tothe following specification, in connection with the accom; panyingdrawing in which Fig. 1 is a 'front elevation of a section of windowcasing containing a metal channel embodying my invention.

Fig. 2 is a side elevation of the channel.

Figs. 3 and 4 are sectional views at lines 33 of Fig. 1 and 4-4 of Fig.2 respectively, Fi 4 being on a greatly enlarged scale.

fn the drawing a indicates a common form of metal window casing of anautomobile body', said casing having a groove 6 therein,

the sides .of which are as nearly perpendicular to the bottom as it ispossible to make them with forming dies.

The channel a is of the type shown in .1927. Serial No. 202,650.

said Patent No. 1,521,168, being of thin, flexible and somewhatresilient sheet metal, bent in U-form, to provide a base and two sides.

According to my invention I form from the channel, at suitable intervalsthroughout the length thereof, a series of pairs of short tongues 05 ateach side of the channel by cutting a slit in the side longitudinally,or parallel to the base and cutting two slits transversely from the endsof the longitudinal slit, so that they extend past the line where theside is bent outward from the base, said tongues being bent outward fromtheir respective sides to positions in which they extend slightlyobliquely to the plane of the baseor outwardly from the base when thechannel is in position.

The end edges e, of the tongues are formed to extend parallel to eachother and to the sides of the channel and the distance between saidedges is made slightly greater, (in practice a small fraction of aninch) than the perpendicular distance between the sides of the groove 1)in which the channel is to be placed.

With the above described construction, when installing the channel inthe casing groove, it will be held in a position in which its bottomwill be parallel to the bottom of the groove, and then it will be forceddirectly therein while held in this relation. As the tongues 03, whenthe channel is in this position, extend obliquely outward, they willengage the sides of the groove at their edges, or inner corners and willbe sprung slightly outward, or in towards the adjacent sides of thechannel, as it is forced inward, as from Elie fpll line to the dottedline position of The extent to. which the tongues d are sprung intowards their adjacent sides'is in practice very slight, and ispermitted either by a slight bending of the bottom of the c iannel or ofthe tongues themselves,- or of both, but the action of forcing thechannel into the groove causes the tongues to be sprung slightly towardseach other by reason of the pressure of the sides of the casing groovethereagainst, so that the tongues will be engaged with the sides of thegroove with considerable force, The channel will be forced inward untilits base firmly engages the bottom of the groove, as indicated in Figs.3 and 4. As the tongues d, when the channel is in this position, projectoutward at a slight angle to the bottom of the groove, it follows thatany force tending to pull the channel outward from the groove will tendto increase the force with which the tongues engage the sides of thegroove, as the end edges of the tongues already engage the sides of thegroove with a firm frictional engagement and any tendency to cause thechannel to be pulled out will thereby tend to cause the tongues to swinginward, so as to increase the distance between their edges. lVhether, bythis action, the sides of the groove would be slightly spread, or thetongues would be slightly imbedded in said sides, or would be slightlybent, depends on conditions, but the ultimate effect would be the same,which is to prevent the removal of the channel. As a result there willalways be a strong frictional engagement of the channel with the sidesof the groove tending to hold it in place and tending to increase inforce as the demands thereon are increased. It may be noted in thisconnection that the longitudinal slits in the sides which are made informing the tongues are square and thus provide a sharp corner forengagement with the sides of the groove when the tongues are bentoutward slightly, as shown.

It is particularly important that the trans verse slits which are madein forming the sides of the tongues be extended, to or slightly into thebase portion of the channel, so that the tongues will be bent outward atwhat may be considered as the side edges of the base, or will extend inpractical continuation of the base, as distinguished from a formation inwhich the tongues would extend from the sides somewhat remotely from thebase as, in the position shown, the tongues will not interfere with theaction of the sides in providing a yielding support for the glass, whilethey would prevent yielding of the sides if located, for example, nearthe middle of the sides. The base also forms a rigid means for receivingthe thrust of the tongues.

The force of frictional engagement of the tongues with the sides of thegrooves is also suflicient to hold the channel against longitudinalmovement in the groove, but usually the ends of the channel will be inabutment with the ends of the grooves.

lhe operation of forming the tongues 1n the channel does not materiallyincrease the cost of production of the channel, as they may beautomatically formed by a simple punching operation.

While the construction described is particularly advantageous when usedin connection with the groove of a metal casing, on account of thedilliculty ordinarily encountered in securing a channel of this type inmetal groove, it may obviously be advantageously employed in connectionwith a channel in a wooden casing.

I claim:

1. A sheet metal window glass channel for a window casing groove,composed of a base and two sides and having a pair of tongues formedtherewith and projecting oppositely from the base beyond the sides inposition for yieldable engagement with the sides, of a casing groove asthe channel is forced towards the bottom thereof.

2. A sheet metal window glass channel for a window casing groove,composed of a base and two sides and having a pair of tongues formedtherewith and projecting at opposite sides thereof adjacent the line ofconnection of the sides and base and extending in slightly divergentrelation to the plane of the base, the normal distance between the endsof the tongues being slightly greater than the distance between thesides of the groove and said tongues being yieldable to permit thechannel to be pressed into the groove towards its bottom.

3. A sheet metal window glass channel for a window casing groove,composed of a base and two sides and having a tongue out from one sideand bent outwardly therefrom along a longitudinal line adjacent the lineof connection between the base and side, said tongue being arranged foryieldable engagement at its end with the adjacent side of the casinggroove when the channel is inserted therein, to hold the opposite sideof the channel in abutment with the opposite side of the groove.

4:. A sheet metal window glass channel for a window casing groove,composed of a base and two sides and having a tongue out from each sideand bent outward therefrom along longitudinal lines adjacent the linesof connection between the base and sides respectively, the normaldistance betwen the ends of the tongues being slightly greater than thewidth of the casing groove, and said tongues being arranged foryieldable engagement withthe sides of the groove, to permit them to besprung outwardly as the channel is forced into the groove towards itsbottom.

5. A sheet'metal window glass channel for a window casing groove,composed of a base and two sides and having a tongue out from each sideand bent outward therefrom along longitudinal lines adjacent the linesof connection between the base and sides respectively, the end edges ofsaid tongues being parallel to the sides of the channel and the normaldistance therebetween being slightly greater than the width of thecasing groove, said tongues being arranged to yield outward when engagedat their ends with the sides of the groove as the channel is forced intothe groove.

6. A sheet metal window glass channel for a window casing groove,composed of a base and two sides and having a tongue cut from each sideby a longitudinal slit therein and two transverse slits which extendfromthe Hill ends of the longitudinal slit into the base portion, thetongues thereby formed being bent outward from the sides to positions inslight divergence with relation to the plane 5 of the base, in which thedistance between their end edges is slightly greater than the distancebetween the sides of the casing groove, and said tongues being adaptedto yield towards the sides of the channel as it is pressed into thecasing roove.

' In testimony whereof,% have signed my name to this specification.

EDWIN W. M. BAILEY.

